{"book":"adl0131","page":168,"text":"کتاب\n۱۵۷\nمساحت\n۱۵ و ۳۷ = ۲۴ – ۶۱۵ و ۱۳ | جذر تا سه مراتب مکسور عشاریه\n۱۵ و ۳۷ – ۲۵ = ۱۲،۵ | = ۷۲۶۶۳۱۴۲۷۵√\n۱۵ و ۳۷ – ۲۶ = ۱۱،۵ | ۲۶۹ ، ۷۶۶\nپس رقبه مثلث مذکور تقریباً ۲۶۹،۷۶۶ مطلوب است-\n(۴۴) چند تمثیلات راحل نموده در ذیل می نگاریم-\nسقف یک دمه بطرح سلامی ساخته شده است و عرض آن ۲۴\nفٹ است و دیوارهای آن از زمین\n۲۰ فٹ بلنداند و فاصله بجه سقف مذکور\n۱۰فٹ است پس رقبه دمه سه مذکور را دریافت کنید-\nشکل کشیده از سطح قائم الزاویه و مثلث مرکب است- الف ب\nیای ج عرض است و بلندی دیوارها یعنی الف ی یا ب ج\n۲۰ فٹ است و از سلامی عمودی فاصله سقف آن عمود است","chars":538,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00168.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/168","canvas":"https://afghanpress.org/iiif/adl0131/canvas/168","source":"https://afghanistandl.nyu.edu/books/adl0131/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0131_download.pdf","rights":{"image":{"statement":"Public domain. NYU states: \"All works presented on this website are, unless otherwise indicated, in the public domain. The images available on this website may be freely reproduced, distributed and transmitted by anyone for any purpose, commercial or non-commercial.\"","uri":"http://rightsstatements.org/vocab/NoC-US/1.0/","holder":"New York University Libraries","source":"https://afghanistandl.nyu.edu/about.html","delivery":"Images are served from a copy mirrored by this project, not from NYU's servers, under the reproduction terms above.","endorsement":"This is an independent project. It is not affiliated with, endorsed by, or reviewed by New York University."},"text":{"statement":"Machine-generated transcription, dedicated to the public domain under CC0 1.0. No warranty of accuracy: see the provenance block on every page.","uri":"https://creativecommons.org/publicdomain/zero/1.0/","holder":"Steps Ventures"}},"provenance":{"text_produced_by":"gemini-3.1-pro-preview","thinking_level":"low","read_completed":"2026-08-09","per_page_confidence":null,"per_page_confidence_note":"Not recorded during the corpus run. No calibrated per-page score exists, and none is estimated here.","human_reviewed":false,"accuracy_context":"Roughly two thirds of characters agree with a modern printed edition of the same text. Much of the disagreement is editorial, not misreading. Treat the transcription as a finding aid and read the page image before quoting.","primary_source":"The page image. The text is an index into it."}}